Remove Strict Mode

Replace strict mode control with OXP enable/disable control
Display OXP setting on new game ship parade to make it clearer to users why their OXPs aren't loading
Adjust descriptions
Remove all gameplay differences other than OXP loading in strict mode
Remove strict_mode settings from equipment.plist

(Comment out rather than strict_mode_only out energy bomb; this doesn't affect the Energy Bomb OXP at all)
Merge branch 'remove-strict-mode'

Replace strict mode with OXPs toggle (issue #29)
Some new scripting events

ship.cargoDumpedNearby(cargo,dumper)
ship.defenseTargetDestroyed(target)
ship.shipAchievedDesiredRange
ship.stationWithdrewDockingClearance
station.stationDockingQueuesAreEmpty
station.stationReceivedDockingRequest(ship)
ship.shipWitchspaceBlocked(blocker)
New script methods

station.abortAllDockings()
station.abortDockingForShip(ship)
More JS functions to match AI

ship.becomeCascadeExplosion()
ship.broadcastCascadeImminent()
More AI equivalents in JS

ship.offerToEscort(mother)
station.launchEscort()
escortRejected event
Fix a couple of errors in new events
Fix compiler warning